MP20045DN-18-LF

Voltage Dropout (Max):	0.28V @ 1A
Supplier Device Package:	8-SOIC-EP
Package / Case:	8-SOIC (0.154", 3.90mm Width) Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Current, Over Temperature
Control Features:	Enable, Power Good
PSRR:	56dB (1kHz)
Current - Quiescent (Iq):	110µA
Current - Output:	1A
Series:	--
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	1.8V
Voltage - Input (Max):	5.5V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tube

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Introduction

MP20045DN-18-LF is a linear voltage regulator geared towards power applications, such as those in industrial, automotive, and computer related technologies. This voltage regulator features low output noise, low dropout voltage, and low power consumption, making it ideal for a variety of applications. It is made up of four main components – a pass transistor, an error amplifier, a reference voltage source, and a thermal shutoff circuit.

Application Fields

MP20045DN-18-LF can be used in a variety of applications. It is specifically designed for applications that require low output noise and low dropout voltage, such as power supply design, automotive applications, and computing. It has a wide input voltage working range, which allows for a wide range of potential applications. The linear regulator is particularly useful for applications that require precise and reliable voltage regulation, such as those in industrial, automotive, and computer related technologies. This regulator is perfect for use with applications that require low noise operation, such as battery-operated devices, medical equipment, and precision laboratory tests. It can also be used to regulate power supply voltages in high-end digital systems, such as those found in digital televisions, displays, and LCD backlighting systems.

Working Principle

The MP20045DN-18-LF regulator works on the basic principle of controlling the output voltage by comparing it to a reference voltage. The regulator is made up of four main components – a pass transistor, an error amplifier, a reference voltage source, and a thermal shutoff circuit. The reference voltage source creates a predetermined voltage level, called the "set point" voltage. This is essentially the voltage level that the regulator is trying to maintain. The error amplifier compares the set point voltage to the output voltage from the pass transistor and produces a control voltage that adjusts the overall voltage level by controlling the pass transistor. When the output voltage begins to rise above the set point voltage, the error amplifier produces a control voltage that causes the pass transistor to reduce the current it supplies to the load. This in turn drops the output voltage. The reverse happens when the output voltage drops below the set point voltage. The error amplifier produces a control voltage that increases the current supplied by the pass transistor, which in turn increases the output voltage. The thermal shutoff circuit is used to protect the circuitry from thermal damage. It senses the temperature of the device and shuts off the supply voltage if the temperature becomes too high.

Conclusion

The MP20045DN-18-LF is a linear regulator ideal for applications that require precise and reliable voltage regulation. Its low noise operation, low dropout voltage, and wide input voltage working range make it ideal for a variety of applications, such as battery-operated devices, medical equipment, digital systems, and precision laboratory tests. The regulator works on the basic principle of comparing the output voltage to a reference voltage and adjusting the current supplied to the load accordingly. The thermal shutoff circuit provides an extra layer of protection for the regulator.

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